A building sponge rainwater bioretention pool

Abstract

The present invention relates to the technical field of sponge city construction, and specifically to a building sponge rainwater biological retention pool, comprising a water collection part, a first purification part, and a second purification part arranged in sequence from the outside to the inside, and a water storage area is arranged below the water collection part, the first purification part, and the second purification part. Among them, the present invention improves the system's ability to temporarily store and slowly release rainwater by arranging a multi-stage water storage part and a water delivery network therein; in addition, the present invention further combines multiple overflow pipes to establish an effective water volume control mechanism, adjusts the water volume distribution according to different water levels, so that the system can effectively respond to various types of rainy weather and ensure the rapid discharge of rainwater. The present invention effectively solves the problems of limited water storage capacity and lack of effective water volume control in traditional biological retention pools.

Description

Technical Field

[0001] The present application relates to the technical field of sponge city construction, and in particular to a building sponge rainwater biological retention pool. Background Art

[0002] In order to reduce the damage caused by urban development and construction to the natural ecological environment, the construction of sponge cities has been vigorously promoted in recent years. Sponge cities aim to enhance the city's natural water storage, water infiltration and water purification capabilities, so that the city absorbs and stores water during rainfall like a sponge, and gradually releases and utilizes water resources after the rain. As one of the important components of sponge city construction, biological retention ponds integrate water storage, drainage, landscape, ecology, etc., and are an important part of sponge city construction.

[0003] Bioretention ponds manage rainwater runoff by simulating natural water flow processes. They are usually composed of herbaceous vegetation areas and areas for temporary storage of rainwater and filtration through plants and soil layers. Under conditions such as tight land resources and high construction and maintenance costs, the capacity of traditional bioretention pond aquifers is usually designed to be small, with low space utilization and limited water storage capacity. Especially under weather conditions of heavy or continuous rainfall, once the capacity limit is reached, no more rainwater can be stored. At the same time, traditional bioretention ponds do not have an effective control and discharge system to regulate water storage and discharge, resulting in water overflow during high flow.

[0004] Therefore, the prior art has defects and needs to be improved and developed. Summary of the invention

[0005] The purpose of the present invention is to provide a building sponge rainwater bioretention pool to solve the technical problems of limited water storage capacity and lack of effective water volume control mechanism in the conventional bioretention pool in the prior art.

[0006] The present invention provides a building sponge rainwater bioretention pool, comprising: a water collection part, a first purification part and a second purification part arranged in sequence from the outside to the inside, and a water storage area is arranged below the water collection part, the first purification part and the second purification part;

[0007] The water collecting part is an annular groove, and the outer wall of the water collecting part is connected with the surrounding gentle slope;

[0008] A plurality of partitions are arranged in the first purification part, and the partitions are used to evenly divide the first purification part into a plurality of fan-shaped areas. The partitions are also used to divide each fan-shaped area into a first filling area and a second filling area along its radial direction. The first filling area and the second filling area are arranged alternately in the first purification part;

[0009] One side of the first filling area close to the water collecting portion is opened to communicate with the water collecting portion;

[0010] The second filling area includes a grass layer and a filling layer arranged in sequence from top to bottom, and the filling layer is provided with water seepage holes to communicate with the water storage area;

[0011] A first water storage part is buried in the grass layer, the top and bottom of the first water storage part are closed, the top of the first water storage part extends to the top of the grass layer and the side wall is open as its water inlet, and the bottom side wall of the first water storage part is open as its water outlet; first connecting pipes are arranged between adjacent first water storage parts to communicate with each other;

[0012] The second purification part is an open water storage tank, in which a second water storage part is arranged, the second water storage part is filled with activated carbon filler, and at least one partition plate is vertically arranged in the second water storage part to form a U-shaped or S-shaped water storage channel; the water inlet end of the water storage channel is selectively connected with part or all of the first water storage part through a plurality of second connecting pipes, and the water outlet end of the water storage channel is connected with the water storage area through a third connecting pipe;

[0013] Also includes an overflow pipe, the overflow pipe includes a first overflow pipe, a second overflow pipe and a third overflow pipe;

[0014] The first overflow pipe is arranged on a side of the second water storage part away from the second connecting pipe, the water inlet end of the first overflow pipe is connected to the water outlet end of the water storage channel, and the water inlet end of the first overflow pipe is higher than the water inlet end of the third connecting pipe;

[0015] The second overflow pipe is arranged in the first filling area, the water inlet end of the second overflow pipe extends to the top of the first filling area, and the water outlet end of the second overflow pipe passes through the first filling area and is connected to the municipal rainwater pipe network;

[0016] The third overflow pipe is arranged in the second purification part, the water inlet end of the third overflow pipe is arranged in the center of the tank body of the second purification part, and the water outlet end of the third overflow pipe is connected to the municipal rainwater pipe network;

[0017] Among them, the heights of the water inlet end of the first overflow pipe, the water inlet end of the second overflow pipe, the water reservoir wall, the water inlet end of the third overflow pipe and the water collecting ring pool wall gradually increase in sequence.

[0018] Furthermore, the area of ​​the first filler region is smaller than the area of ​​the second filler region.

[0019] Furthermore, the grass layer is in the shape of an arc groove, the highest points on both sides of the arc groove are connected with the first filling area at the same height, and the first water storage part is arranged at the lowest point of the arc groove.

[0020] Furthermore, the second water storage part is annular, and the first water storage part is connected with each of the first water storage parts through the first connecting pipe.

[0021] Furthermore, the second water storage part is a plurality of mutually independent columnar water storage units, and each of the water storage units is connected to one or more of the first water storage parts through the second connecting pipe.

[0022] Furthermore, it also includes a fountain device, which is arranged in the third overflow pipe through a fixing column, and the bottom of the fountain device is higher than the water inlet end height of the third overflow pipe.

[0023] Furthermore, the water storage area is also provided with a permeation port and a reuse port.

[0024] Furthermore, the packing layer includes a zeolite layer and an aluminum sludge packing layer arranged in sequence from top to bottom, and the water seepage holes are arranged in the aluminum sludge packing layer.

[0025] Furthermore, a sedimentation portion is provided at the bottom of the first water storage portion, and the sedimentation portion is in an inverted truncated cone shape.

[0026] Furthermore, a filter grid is provided at the water inlet end of the first water storage part, and the top of the first water storage part is a detachable end cover.

[0027] Beneficial effects:

[0028] It can be seen from the above technical solutions that the technical solution of the present invention provides a building sponge rainwater biological retention pool, which has at least the following beneficial effects:

[0029] 1. The water storage capacity of the system is improved; the technical solution of the present invention improves the purification effect of rainwater and enhances the temporary storage and slow release capacity of rainwater through the close combination and ingenious coordination of multiple filtering and multiple water storage areas.

[0030] Second, an efficient water volume control mechanism has been established; each overflow pipe in the present invention responds to different water levels, thereby effectively controlling the distribution of water volume and water flow, enabling the system to quickly drain water even under extreme weather conditions, and effectively ensuring the stability of the surrounding environment.

[0031] 3. Improved space utilization: The present invention utilizes the usually vacant central area of ​​the traditional retention pond, which not only provides an effective water purification function, but also increases the water storage space, greatly improving the space utilization of the middle area of ​​the biological retention pond. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0033] Figure 1 A diagram of a building sponge rainwater bioretention pool provided in an embodiment of the present application.

[0034] Figure 2 A cross-sectional view of the first purification unit provided in an embodiment of the present application.

[0035] Figure 3 A cross-sectional view of the second purification unit provided in an embodiment of the present application.

[0036] Figure 4 A diagram of a building sponge rainwater bioretention pool provided as another embodiment of the present application.

[0037] In the figure, the meanings of the reference numerals are as follows:

[0038] Water collection part 1;

[0039] First purification section 2, partition 2-1, first filler area 2-2, second filler area 2-3, grass layer 2-3-1, filler layer 2-3-2, zeolite layer 2-3-2-1, aluminum sludge filler layer 2-3-2-2, water seepage hole 2-3-3, first water storage section 2-4, sedimentation section 2-4-1, filter grille 2-4-2; first connecting pipe 2-5,

[0040] The second purification part 3, the water reservoir 3-1, the second water storage part 3-2, the partition plate 3-2-1, the water storage channel 3-2-2, the second connecting pipe 3-3, and the third connecting pipe 3-4;

[0041] Overflow pipe 4, first overflow pipe 4-1, second overflow pipe 4-2, third overflow pipe 4-3;

[0042] Water storage area 5, infiltration port 5-1, reuse port 5-2;

[0043] Fountain installation 6. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0049] The present application embodiment provides a building sponge rainwater bioretention pool. Figure 1 The building sponge rainwater biological retention pool includes a water collection part, a first purification part and a second purification part arranged in sequence from the outside to the inside. A water storage area is arranged below the water collection part, the first purification part and the second purification part, and a water storage module is arranged in the water storage area.

[0050] For the sake of convenience, in this embodiment, the water collecting part, the first purification part and the second purification part all adopt Figure 1 The concentric circle arrangement in the figure is used as an example. During actual construction, the shape and size of each part can be adjusted appropriately according to local conditions.

[0051] Reference Figure 1 The water collection part 1 is an annular groove with equal heights on both sides and an outer wall connected with the surrounding gentle slope. Rainwater flows naturally from high ground to low ground and enters the water collection part 1.

[0052] A plurality of partitions 2-1 are provided in the first purification part 2. The partitions 2-1 are water-impermeable partitions used to evenly divide the first purification part 2 into a plurality of fan-shaped areas. The partitions 2-1 are also used to divide each fan-shaped area into a first filling area 2-2 and a second filling area 2-3 along its radial direction. The first filling area 2-2 and the second filling area 2-3 are arranged alternately in the first purification part 2. The first filling area 2-2 is opened on one side close to the water collecting part 1 to communicate with the water collecting part 1.

[0053] The second filling area 2-3 includes a grass layer 2-3-1 and a filling layer 2-3-2 arranged in sequence from top to bottom, and a water seepage hole 2-3-3 is arranged in the filling layer 2-3-2 to communicate with the water storage area 5.

[0054] Among them, in this embodiment, expanded clay can be filled in the first filling area 2-2, and the filling layer 2-3-2 includes a zeolite layer 2-3-2-1 and an aluminum sludge filling layer 2-3-2-2 arranged in sequence from top to bottom, and the seepage hole 2-3-3 is arranged in the aluminum sludge filling layer 2-3-2-2.

[0055] A first water storage part 2-4 is buried in the grass layer 2-3-1. The top and bottom of the first water storage part 2-4 are closed. The top of the first water storage part 2-4 extends to the top of the grass layer 2-3-1 and is open at the side wall as its water inlet end. The bottom side wall of the first water storage part 2-4 is open as its water outlet end. First connecting pipes 2-5 are provided between adjacent first water storage parts 2-4 to connect with each other.

[0056] The first water storage part 2-4 may be cylindrical, with its top slightly lower than the height of the first filler area 2-2 adjacent to both sides, and the bottom of the first water storage part 2-4 may extend to the middle or lower middle part of the filler layer 2-3-2, thereby reserving enough space for the water outlet of the filler layer 2-3-2. Figure 2 At this time, the seepage holes 2-3-3 in the second packing area 2-3 can be arranged on the side wall of the packing layer 2-3-2 and located directly below the first water storage part 2-4, so as to prolong the retention time of water flow in the second packing area 2-3 and improve the purification effect. The bottom of the first water storage part 2-4 can also be extended to the same height as the bottom of the packing layer 2-3-2 to increase the accommodation space inside the first water storage part 2-4. At this time, the seepage holes 2-3-3 are arranged at the bottom of the packing layer 2-3-2, that is, the bottom of the aluminum sludge packing layer 2-3-2-2. The first connecting pipe 2-5 can be arc-shaped, which can effectively slow down the water flow speed, thereby reducing the impact on downstream structures.

[0057] Reference Figure 1 and Figure 3 The second purification part 3 is an open water storage tank 3-1, which can retain a certain amount of water in the tank body on a daily basis. A relatively independent water area can be selectively set in the water storage tank 3-1 to plant aquatic plants, etc. according to actual needs and the surrounding environment to improve the overall aesthetics of the system. A second water storage part 3-2 is set in the tank body, and the second water storage part 3-2 is filled with activated carbon filler to effectively remove various pollutants in the water flowing in through the first water storage part 2-4.

[0058] At least one partition plate 3-2-1 is vertically arranged in the second water storage part 3-2 to form a U-shaped or S-shaped water storage channel 3-2-2; the water inlet end of the water storage channel 3-2-2 is selectively connected with part or all of the first water storage part 2-4 through a plurality of second connecting pipes 3-3, and the water outlet end of the water storage channel 3-2-2 is connected with the water storage area 5 through a second connecting pipe 3-4.

[0059] Among them, refer to Figure 3 In this embodiment, taking the setting of a partition plate 3-2-1 as an example, the second water storage part 3-2 is divided by it into a water storage channel 3-2-2 consisting of two flow channels arranged in parallel and connected at the bottom, so that the speed of water flow is slowed down when passing through the water storage channel 3-2-2, increasing the contact time between the water body and the activated carbon filler, thereby improving the purification efficiency.

[0060] In this embodiment, the building sponge rainwater bioretention pool also includes an overflow pipe 4 to deal with excessive rainwater during various rainy weather periods. Figure 1 , Figure 2 and Figure 3 The overflow pipe 4 includes a first overflow pipe 4-1, a second overflow pipe 4-2 and a third overflow pipe 4-3.

[0061] Reference Figure 3 The first overflow pipe 4-1 is arranged on the side of the second water storage part 3-2 away from the second connecting pipe 3-3, the water inlet end of the first overflow pipe 4-1 is connected to the water outlet end of the water storage channel 3-2-2, and the water inlet end of the first overflow pipe 4-1 is higher than the water inlet end of the second connecting pipe 3-4.

[0062] Reference Figure 2 The second overflow pipe 4-2 is arranged in the first filling area 2-2, the water inlet end of the second overflow pipe 4-2 extends to the top of the first filling area 2-2, and the water outlet end of the second overflow pipe 4-2 passes through the first filling area 2-2 and is connected to the municipal rainwater pipe network.

[0063] Reference Figure 1 and Figure 3 The third overflow pipe 4-3 is arranged in the second purification part 3, the water inlet end of the third overflow pipe 4-3 is arranged in the center of the pool body of the second purification part 3, and the water outlet end of the third overflow pipe 4-3 is connected to the municipal rainwater pipe network.

[0064] Among them, the water inlet end of the first overflow pipe 4-1, the water inlet end of the second overflow pipe 4-2, the pool wall of the water reservoir 3-1, the water inlet end of the third overflow pipe 4-3 and the water collecting ring pool wall gradually increase in height.

[0065] In combination with the water collection part 1, the first purification part 2, the second purification part 3 and the overflow pipe 4 described above, the water volume control mechanism and water storage process of the building sponge rainwater biological retention pool are described in detail below in combination with the roughly divided rainfall change stages:

[0066] In the first stage, at the beginning of rainfall, rainwater flows into the water collection part 1, and then flows into the first filling area 2-2 and flows upward and accumulates from its bottom. After preliminary filtration through the expanded clay filler in the first filling area 2-2, it flows from its top into the adjacent second filling area 2-3, and is purified by the grass layer 2-3-1 and the filling layer 2-3-2 in turn, and finally flows into the water storage area 5 through the seepage hole 2-3-3 for storage.

[0067] In the second stage, the rainfall gradually increases, and the infiltration speed of rainwater in the second filling area 2-3 gradually becomes slower than the inflow speed of rainwater. At this time, rainwater slowly accumulates on the grass layer 2-3-1, and as the water level rises, its height approaches the water inlet end of the first water storage part 2-4, and finally rainwater enters the internal space of the first water storage part 2-4 through the water inlet end and accumulates. The first connecting pipe 2-5 is also used to balance the water volume between adjacent first water storage parts 2-4.

[0068] In the third stage, the rainfall continues to increase, and the first water storage part 2-4 can no longer hold more rainwater. At this time, the excess rainwater will be discharged into the second water storage part 3-2 through the second connecting pipe 3-3. The rainwater flows along the water storage channel 3-2-2, is filtered and purified by the activated carbon filler along the way, and finally discharged into the water storage area 5 through the second connecting pipe 3-4 for storage.

[0069] In the fourth stage, when the rainfall continues to increase, the second water storage area 5 will not be able to provide more storage space, and the excess rainwater will flow into the open water storage tank 3-1 through the first overflow pipe 4-1 at the top of the second water storage area 5 to replenish the water in the tank.

[0070] The fifth stage can correspond to the relatively rare continuous heavy rainfall weather. When the rainfall suddenly increases and exceeds the conveying capacity of the connecting pipes at various locations, the rainwater is first accumulated in the first purification part 2 which is relatively low in terrain. The rainwater first gradually floods the top of the first water storage part 2-4, and the water level of the stored rainwater continues to rise until the excess rainwater overflows the partition 2-1, and finally enters the first filling area 2-2 and is quickly discharged into the external municipal rainwater pipe network through the second overflow pipe 4-2 therein.

[0071] In the sixth stage, when there are disasters such as heavy rain or rainstorms and floods, the rain lasts for a short time, but is very concentrated and violent. Its short-term high-intensity rainfall can quickly cause the water level of rivers and lakes to rise sharply. At this time, the second overflow pipe 4-2 is still not enough to drain water quickly, and the water level continues to rise until it passes over the relatively lower side of its two sides, that is, the wall of the reservoir 3-1 and enters the reservoir 3-1 for accumulation, using the larger space in the reservoir 3-1 to alleviate the peak of rainwater runoff. If the water level of the reservoir 3-1 continues to rise, it can be quickly discharged to the municipal pipe network through the third overflow pipe 4-3 with a larger pipe diameter at the center of the pool.

[0072] Through the phased water storage design, the architectural sponge rainwater bioretention pool in this example, by setting up a combination of multiple water storage spaces, connecting pipes and overflow pipes, can gradually introduce more water storage spaces and provide more overflow methods according to different rainfall stages, ensuring the rapid discharge of rainwater and achieving fine water volume control.

[0073] In some embodiments, the area of ​​the first filler region 2 - 2 is smaller than the area of ​​the second filler region 2 - 3 .

[0074] Among them, the particle size of the filter material is usually set according to the characteristics of first large and then small, and the size of the filler particle size directly affects the size of the gaps between the fillers, thereby affecting the resistance to fluid flow. Therefore, the first filler area 2-2 filled with larger particle size fillers has a relatively small area, realizing rapid flow and simple filtration of rainwater, while the second filler area 2-3 has a larger area to meet the flow requirements while achieving better filtration effects.

[0075] In some embodiments, the grass layer 2-3-1 is in the shape of an arc groove, and the highest points on both sides of the arc groove are connected to the first filling area 2-2 at the same height. The arc-shaped gentle slope of the grass layer 2-3-1 helps to guide rainwater to flow naturally to a lower place and enter the first water storage part 2-4 set at its lowest point.

[0076] In some embodiments, reference Figure 4 The second water storage part 3-2 can be annular, thereby increasing the storage space of the second water storage part 3-2 and improving the space utilization rate in the water storage tank 3-1. The first water storage part 2-4 can also be connected to each of the first water storage parts 2-4 through the first connecting pipe 2-5, reducing the circulation of water between the first water storage parts 2-4. In this embodiment, refer to Figure 1 The second water storage part 3-2 is a plurality of independent columnar water storage units, and each of the water storage units is connected to one or more of the first water storage parts 2-4 through the second connecting pipe 3-3.

[0077] In some embodiments, a fountain device 6 is further included, and the fountain device 6 is disposed in the third overflow pipe 4-3 through a fixing column, and the bottom of the fountain device 6 is higher than the water inlet end height of the third overflow pipe 4-3.

[0078] Among them, the fountain device 6 can use the water in the reservoir 3-1 or the water storage area 5 as a landscape in daily life to create a good landscape effect. It can also increase the oxidation of the water body, improve the water quality, and play a role in maintaining the ecological stability in the reservoir 3-1.

[0079] In some embodiments, the water storage area 5 is also provided with a permeation port 5-1 and a reuse port 5-2 to improve the recycling rate of water resources.

[0080] The infiltration port can be set at a higher water level in the water storage area. After the water storage area is full of water, excess rainwater can penetrate into the external soil through the infiltration port, which can also consume part of the rainwater and reduce the pressure of the municipal pipe network. The reuse port is used to take water from the supply source, such as irrigation, flushing toilets and landscape water.

[0081] In some embodiments, a sedimentation portion 2-4-1 is provided at the bottom of the first water storage portion 2-4. The sedimentation portion 2-4-1 is in the shape of an inverted frustum, and the initial sedimentation of smaller particles in the rainwater stored in the first water storage portion 2-4 is achieved by utilizing the change in the bottom angle.

[0082] In some embodiments, a filter grille 2-4-2 is provided at the water inlet end of the first water storage part 2-4 for intercepting larger impurities such as dead branches and leaves; the top of the first water storage part 2-4 is a detachable end cover for easy cleaning of the interior thereof.

[0083] In summary, the present invention improves the system's ability to temporarily store and slowly release rainwater by arranging a multi-level water storage part and a water delivery pipeline network therein; in addition, the present invention establishes an effective water volume control mechanism, which adjusts the water volume distribution according to different water levels, so that the system can effectively cope with various types of rainy weather and ensure the rapid discharge of rainwater.

[0084] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0085] The above is a detailed introduction to a building sponge rainwater biological retention pool provided in an embodiment of the present application. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application; ordinary technicians in this field should understand that: they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. A building sponge rainwater bioretention pool, characterized in that: include: A water collection part, a first purification part, and a second purification part are sequentially arranged from the outside to the inside, and a water storage area is arranged below the water collection part, the first purification part, and the second purification part; The water collecting part is an annular groove, and the outer wall of the water collecting part is connected with the surrounding gentle slope; A plurality of partitions are arranged in the first purification part, and the partitions are used to evenly divide the first purification part into a plurality of fan-shaped areas. The partitions are also used to divide each fan-shaped area into a first filling area and a second filling area along its radial direction. The first filling area and the second filling area are arranged alternately in the first purification part; One side of the first filling area close to the water collecting portion is opened to communicate with the water collecting portion; The second filling area includes a grass layer and a filling layer arranged in sequence from top to bottom, and the filling layer is provided with water seepage holes to communicate with the water storage area; A first water storage part is buried in the grass layer, the grass layer is in the shape of an arc groove, the highest points on both sides of the arc groove are connected with the first filling area at the same height, the first water storage part is arranged at the lowest point of the arc groove, the top and bottom of the first water storage part are closed, the top of the first water storage part extends to the top of the grass layer and the side wall is open as its water inlet end, and the bottom side wall of the first water storage part is open as its water outlet end; first connecting pipes are arranged between adjacent first water storage parts to communicate with each other; The second purification part is an open water storage tank, in which a second water storage part is arranged, the second water storage part is filled with activated carbon filler, and at least one partition plate is vertically arranged in the second water storage part to form a U-shaped or S-shaped water storage channel; the water inlet end of the water storage channel is selectively connected with part or all of the first water storage part through a plurality of second connecting pipes, and the water outlet end of the water storage channel is connected with the water storage area through a third connecting pipe; Also includes an overflow pipe, the overflow pipe includes a first overflow pipe, a second overflow pipe and a third overflow pipe; The first overflow pipe is arranged on a side of the second water storage part away from the second connecting pipe, the water inlet end of the first overflow pipe is connected to the water outlet end of the water storage channel, and the water inlet end of the first overflow pipe is higher than the water inlet end of the third connecting pipe; The second overflow pipe is arranged in the first filling area, the water inlet end of the second overflow pipe extends to the top of the first filling area, and the water outlet end of the second overflow pipe passes through the first filling area and is connected to the municipal rainwater pipe network; The third overflow pipe is arranged in the second purification part, the water inlet end of the third overflow pipe is arranged in the center of the pool body of the second purification part, and the water outlet end of the third overflow pipe is connected to the municipal rainwater pipe network; and also includes a fountain device, the fountain device is arranged in the third overflow pipe through a fixing column, and the bottom of the fountain device is higher than the water inlet end height of the third overflow pipe; Among them, the heights of the water inlet end of the first overflow pipe, the water inlet end of the second overflow pipe, the water reservoir wall, the water inlet end of the third overflow pipe and the water collection part wall gradually increase in sequence.

2. The building sponge rainwater bioretention pond according to claim 1, characterized in that: The area of ​​the first filler region is smaller than the area of ​​the second filler region.

3. The architectural sponge rainwater bioretention pond according to claim 1, characterized in that: The second water storage part is annular, and the first water storage part is connected with each of the first water storage parts through the first connecting pipe.

4. The architectural sponge rainwater bioretention pond according to claim 1, characterized in that: The second water storage part is a plurality of mutually independent columnar water storage units, and each of the water storage units is connected with one or more of the first water storage parts through the second connecting pipe.

5. The architectural sponge rainwater bioretention pond according to claim 1, characterized in that: The water storage area is also provided with a permeation port and a reuse port.

6. The architectural sponge rainwater bioretention pond according to claim 1, characterized in that: The packing layer comprises a zeolite layer and an aluminum sludge packing layer which are arranged in sequence from top to bottom, and the water seepage holes are arranged in the aluminum sludge packing layer.

7. The architectural sponge rainwater bioretention pond according to claim 1, characterized in that: A sedimentation portion is provided at the bottom of the first water storage portion, and the sedimentation portion is in an inverted truncated cone shape.

8. The architectural sponge rainwater bioretention pond according to claim 1, characterized in that: A filter grid is arranged at the water inlet end of the first water storage part, and a detachable end cover is arranged at the top of the first water storage part.

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